This is probably not the article you're referring to, but I'm still looking:

Top US lawyer warns of deaths at Guantánamo

http://www.guardian.co.uk/world/2009/feb/08/binyam-mohamed-torture-guantanamo-bay

Immediate Reaction Force Teams

An IRF team is a group of five or more guards who collectively serve as “a forced cell extraction team, specializing in the extraction of a detainee who is combative, resistive,” or appears to have a weapon. Outfitted in protective gear and carrying polycarbonate shields, IRF teams are authorized to enter the cells of detainees who appear to be “resistant” and subdue them. Before the team enters the cell, a guard sprays the detainee across the bridge of the nose with a form of pepper spray to incapacitate him. A former guard interviewed for this study described the spray as being “ times stronger” than mace. He recalled an IRF training session where he was sprayed with this mace-like substance: “[I]t pretty much

kicked my ass for three days…. I cried that whole night, and the next day I was in total agony.” While IRFing is not supposed to be used for punishment, several respondents said guards resorted to IRFing in response to minor offenses or confrontations. [...] If the detainees protested, an IRF

team moved in to subdue the men, and then took them to a separate room and forcibly shaved their facial hair. The entire process was filmed. Afterwards, detainees were put in isolation cells.

http://ccrjustice.org/files/Report_GTMO_And_Its_Aftermath.pdf [page 48]

Here's one description of why a hunger strike was begun:

A respondent described a hunger strike triggered by the beating of a fellow detainee, a young man who refused to leave his cell to go to interrogation:

He was a young Arab prisoner and he was with me in the same cellblock. He seemed to be 17 or 18 years old…and, one day, he

refused to go to the interrogation room.… He told the [guard], “I have been arrested when I am innocent. They have arrested me illegally and why are they just asking me questions?” After that about 10 soldiers with armored clothes appeared. They went to his cell and they started beating that boy. And I saw myself that blood was… coming out of his cell.… So we saw that the boy was put on the stretcher and he was tied around his waist…he could not move, he was just chained and tied up.… Then he was taken to the hospital. And after that a lot of the prisoners went on a hunger strike…. I did not participate in the hunger strike, but I didn’t eat anything because I was sad.… I never saw [that detainee] again, no one saw him again. And they were shouting through loud speakers that he was okay, eat your food, he’s fine. All the prisoners were very angry and they were kicking the walls and they were shouting. And the soldiers would stand in the corner of the hall, they would not come in the middle of the hall.[ibid, p.50]

October 2, 2002 - “Jonathan Fredman, who was chief counsel to the CIA’s CounterTerrorist Center, attended a meeting of GTMO staff. […] [His] advice to GTMO on applicable legal obligations was similar to the analysis of those obligations in OLC’s first Bybee memo. […] ‘“It is basically subject to perception. If the detainee dies you’re doing it wrong.”’” (DD) [16] Minutes of this meeting quote Lieutenant Colonel Diane Beaver (JAG) as saying: “We may need to curb the harsher operations while ICRC is around. […] It is better not to expose them to any controversial techniques…. This would draw a lot of negative attention.” [92]

[92] Guantanamo and its Aftermath, Center for Constitutional Rights, November 2008 http://ccrjustice.org/files/Report_GTMO_And_Its_Aftermath.pdf

http://www.webdsi.com/jebbie/tlpage42.html